<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CSS样式引入</title>
<link rel="stylesheet" href="./css/my.css"/>
<style>
    #inner{
        color: blue;
    }
</style>
</head>
<body>
<p style="color: green">行内式</p>
<p id="inner">内嵌式</p>
<p id="out">内嵌式</p>
</body>
</html>